The 300 Spartans Essentially true story of how Spartan king Leonidas led an extremely small army of Greek Soldiers (300 of his personal body guards from Sparta) to hold off an invading Persian army now thought to have numbered 250,000. Details Casts Title The 300 Spartans Release Date 1962-08-01 Runtime 01 Hours 54 Minutes Genres Adventure History War Production Companies 20th Century Fox Production Countries United States of America Richard Egan King Leonidas Ralph Richardson Themistocles of Athens Diane Baker Ellas Barry Coe Phylon David Farrar Xerxes Anne Wakefield Artemisa Donald Houston Hydarnes Anna Synodinou Gorgo Robert Brown Pentheus Laurence Naismith First Delegate Ivan Triesault Demaratus Charles Fawcett Megistias Michalis Nikolinakos Myron Sandro Giglio Xenathon Anna Raftopoulou Toris Dimos Starenios Samos Yorgos Moutsios Demophilus of Thespiae Nikos Papakonstantinou Grellas Kostas Baladimas Zannino Kieron Moore Ephialtes John Crawford Agathon the Spartan Spy